旰食宵衣

Explanation: Sky late dinner, dress up before dawn. Describe the diligent conduct of public affairs 　　Usage: Joint type; as predicate, attributive; with a compliment 　　Source: Southern Chen Xu Ling, "Chen Wendi sorrow policy text": "public hearings ground, Gansi night clothes." 　　Examples: Fen Qian-Gang ~, who respect the country handle day comfort temple. ★ Ming CHEN Ru-yuan "golden lotus mind shooting policy ' Thesaurus:  constancy, granite, one's mind is perturbed to forcibly restrain one's temper, keep one's end up, adhere not to change, be willing to toil